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Mathematics
Problem
Rationalise the denominator and simplify:
4
5
−
5
1
/
4
\dfrac{4}{\sqrt{5}-5^{1/4}}
5
−
5
1/4
4
. a)
4
(
5
−
5
1
/
4
)
5
−
5
\dfrac{4(\sqrt{5}-5^{1/4})}{5-\sqrt{5}}
5
−
5
4
(
5
−
5
1/4
)
b)
4
(
5
+
5
1
/
4
)
25
−
5
\dfrac{4(\sqrt{5}+5^{1/4})}{25-\sqrt{5}}
25
−
5
4
(
5
+
5
1/4
)
c)
4
(
5
+
5
1
/
4
)
5
−
5
\dfrac{4(\sqrt{5}+5^{1/4})}{5-\sqrt{5}}
5
−
5
4
(
5
+
5
1/4
)
d)
4
(
5
+
5
1
/
4
)
5
+
5
\dfrac{4(\sqrt{5}+5^{1/4})}{5+\sqrt{5}}
5
+
5
4
(
5
+
5
1/4
)
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